Calculate the Average Daily Balance (Assume a 30-Day Billing Cycle)

Short Answer

Calculate the average daily balance (assume a 30-day billing cycle):
$\begin{array} { l l l } 4 / 20 & \text { Billing Date Previous Balance } & \$ 700 \\4 / 26 & \text { Payment } & \$ 200 \\4 / 30 & \text { Charge } & \$ 400 \\5 / 4 & \text { Payment } & \$ 150 \\5 / 12 & \text { Cash Advance } & \$ 180\end{array}$